For Leah Martin, a 48-year-old attorney and mother, running on three to five hours of sleep felt normal until headaches and fatigue made her realize she wasn’t performing at her best.

The global fitness tracker for sleep monitoring market size was valued at USD 7.64 billion in 2025 and is predicted to hit around USD 34.15 billion by 2035, rising at a 16.15% CAGR, a study published ...

The redesigned Fitbit app and AI health coach are rolling out to iOS users and Fitbit Premium subscribers in the UK, Canada, Australia, New Zealand and Singapore. Vanessa Hand Orellana Lead Writer ...

Image of an iPhone (with Health app visible) next to an Apple Watch. (Apple) Apple Health brings sleep tracking, scheduling and long-term analysis into one place, with your iPhone acting as the hub ...

I'm a Fitness & Nutrition writer for CNET who enjoys reviewing the latest fitness gadgets, testing out activewear and sneakers, as well as debunking wellness/fitness myths. In my free time I enjoy ...

ATLANTA — Your watch says you had three hours of deep sleep. Should you believe it? Millions of people rely on phone apps and wearable devices like rings, smartwatches and sensors to monitor how well ...

AP Wearable devices, including Apple Watches, can be used to track sleep recently in Atlanta, Ga. ATLANTA — Your watch says you had three hours of deep sleep. Should you believe it? Millions of people ...

Middle school teacher Kate Stoye checks her sleep score on her phone, Wednesday, Jan. 7, 2026, in Hiram, Ga. (AP Photo/Emilie Megnien) ATLANTA — Your watch says you had three hours of deep sleep.

Master Apple Watch health tracking: Learn how heart rate monitoring, sleep tracking, and vitals app work together for better wellness. Pixabay, hu_lexxi Apple Watch has transformed from a simple ...

ATLANTA (AP) — Your watch says you had three hours of deep sleep. Should you believe it? Millions of people rely on phone apps and wearable devices like rings, smartwatches and sensors to monitor how ...